# -*- coding: utf-8 -*-

import string

class TbUser():
	def __init__(self):
		self.nick = None
		self.phone = None
		self.seller_credit = None
		self.buyer_credit = None

class TbCredit():
	def __init__(self):
		self.level = None

class TbItem():
	def __init__(self):
		self.iid = None
		self.title = None
		self.price = None
		self.num = None
		self.nick = None
		self.pic_path = None
		self.seller_cids = None


class TbTrade():
	def __init__(self):
		self.tid = None
		self.title = None
		self.price = None
		self.num = None
		self.status = None
		self.buyer_nick = None
		self.seller_nick = None
		self.created = None


def main():
	user = TbUser()
	user.nick = 'xx'
	print user.nick

if __name__ == "__main__":
	main()